C
chuck williams
Guest
i cant find a test indicator longer than 1/2" where do you get a longer arm for your indicators or a new indicator with a longer arm. thanks.
chuck
chuck
Be careful adding a longer stylus to your indicator that came with a short one. It will change the resolution of your indicator.
While passing over the first step of .0001", both indicators read .00005" almost exactly half of the supposed resolution.
While passing over the second step of .0005", both indicators showed only slightly more movement than .0002". Considerably more than half.
Bottom line............if you replace your contact point with a longer one than the original, you are getting more movement than the indicator is showing you.
Be careful to get the dial to read as close to "zero" as you can.
Joe,
This is exactly what I posted 3 days ago..........If you extend the stylus the readings will be reduced to less than the actual measurement by an amount equal to the percentage of change from the contact point to the pivot (not the attachment point). The ratio won't show as exact when measuring a small difference in heights like you used in your experiment, because the resolution claimed is dramatically reduced because of the extended point.
-Dave-